As of January 1999, FRC FDPs are offered as alternative to other conventional therapy options at the Department where the study was conducted. Between June-1999 and June-2000, 58 patients aged between 33 and 62 years old (25 females, 33 males, mean age: 47) received 65 indirect posterior FRC FDPs. Before enrolment in the trial, all patients were provided with a written informed consent Information was given to each patient regarding the alternative treatment options. The inclusion criteria were as follows: all subjects were required to be at least 18 years old, able to read and sign the informed consent document, physically and psychologically able to tolerate conventional restorative procedures, having no active periodontal or pulpal diseases, having no primary caries, not allergic to resin-based materials, not pregnant or nursing, having antagonist teeth opposing the FRC FDP to be restored, willing to return for follow-up examinations as outlined by the investigators. The patients who had more absent teeth than the tooth to be replaced in the rest of the dentition or those having diastemas were not excluded.